package com.sky.config;

import com.sky.interceptor.JwtTokenAdminInterceptor;
import com.sky.interceptor.JwtTokenUserInterceptor;
import com.sky.json.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.List;


/**
 * 配置类，注册web层相关组件
 */
@Configuration
@Slf4j
public class WebMvcConfiguration extends WebMvcConfigurationSupport {

  @Autowired
  private JwtTokenAdminInterceptor jwtTokenAdminInterceptor;
  @Autowired
  private JwtTokenUserInterceptor jwtTokenUserInterceptor;
  
  /**
   * 注册自定义拦截器
   * @param registry
   */
  protected void addInterceptors(InterceptorRegistry registry) {
    log.info("开始注册自定义拦截器...");
    registry.addInterceptor(jwtTokenAdminInterceptor)
        .addPathPatterns("/admin/**")
        .excludePathPatterns("/admin/employee/login");
    
    registry.addInterceptor(jwtTokenUserInterceptor)
        .addPathPatterns("/user/**")
        .excludePathPatterns("/user/user/login")
        .excludePathPatterns("/user/shop/status");
  }
  
  
    /**
     * 扩展mvc框架的消息转换器 【对返回给前端的数据 进行处理】
     * @param converters
     */
  @Override
  protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
    log.info("开始扩展消息转换器...");
    // 创建一个消息转化器对象
    MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
    // 设置对象转换器，可以将java对象转为json字符串
    converter.setObjectMapper(new JacksonObjectMapper());
    // 将自己的转换器加入到springMVC框架的容器中
    converters.add(0, converter);
  }
  
  /**
   * 通过knife4j生成接口文档
   * @return
   */
  @Bean
  public Docket docket() {
      ApiInfo apiInfo = new ApiInfoBuilder()
              .title("接口文档")
              .version("2.0")
              .description("苍穹外卖项目接口文档")
              .build();
      Docket docket = new Docket(DocumentationType.SWAGGER_2)
              .groupName("后台管理端接口")
              .apiInfo(apiInfo)
              .select()
              // 指定生成接口需要扫描的包
              .apis(RequestHandlerSelectors.basePackage("com.sky.controller.admin"))
              .paths(PathSelectors.any())
              .build();
      return docket;
  }

  @Bean
  public Docket docket2() {
    ApiInfo apiInfo = new ApiInfoBuilder()
        .title("接口文档")
        .version("2.0")
        .description("苍穹外卖项目接口文档")
        .build();
    Docket docket = new Docket(DocumentationType.SWAGGER_2)
        .groupName("小程序用户端接口")
        .apiInfo(apiInfo)
        .select()
        // 指定生成接口需要扫描的包
        .apis(RequestHandlerSelectors.basePackage("com.sky.controller.user"))
        .paths(PathSelectors.any())
        .build();
    return docket;
  }

  /**
   * 设置静态资源映射
   * @param registry
   */
  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    }
}
